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1、毕业设计外文翻译原文标题：ProposalforahighefficiencyLNGpower-generationSystemutilizingwasteheatfromthecombinedcycle中文标题:一个高效的利用液化天然气联合循环余热的发电系统学院名称：能源与动力工程学院专业名称：热能与动力工程ProposalforahighefficiencyLNGpower-generationsystemutilizingwasteheatfromthecombinedcycleY.Hisazumi*,Y.Yamas
2、aki,S.SugiyamaEngineeringDepartment,OsakaGasCo.,1-2Hiranomachi4-chomeChuo-ku,Osaka541,JapanAccepted9September1998AbstractHigh-efficiencypower-generationwithanLNGvaporizingsystemis-31-proposed:itutilizestheLNG'scoldenergytothebestpotentiallimit.Thissystemcanbeappli
3、edtoLNGvaporizersingascompaniesorelectricpowercompaniesandrecoverstheLNG'scoldenergyaselectricpower.ThesystemconsistsofaRankinecycleusingaFreonmixture,natural-gas.Rankinecycleandacombinedcyclewithgasandsteamturbines.Theheatsourcesforthissystemarethelatentheatfromt
4、hesteam-turbine'scondenserandthesensibleheatofexhaustgasfromthewaste-heatrecoveryboiler.Inordertofindouttheoptimalconditionofthesystem,severalfactors,suchasgasturbinecombustionpressure,steampressure,condensingtemperatureincombinedcycle,compositionofmixtureFreon,an
5、dnaturalgasvaporizingpressureareevaluatedbysimulation.Theresultsofthesestudiesshowthatinthetotalsystem,about400kWhcanbegeneratedbyvaporizing1tonofLNG,includingabout60kWh/LNGtonrecoveredfromtheLNGcoldenergywhensupplyingNGin3.6MPa..About8.2MWhcanbeproducedbyusing1to
6、nofLNGasfuel,comparedwithabout7MWhbytheconventionalcombinedsystem.Anetefficiencyofover53%HHVcouldbeachievedbytheproposedsystem.InthecaseoftheLNGterminalreceiving5milliontonsofLNGperyear,thissystemcangenerate240MWandreducethepoweroftheseawaterpumpbymorethan2MW.1998
7、ElsevierScienceLtd.Allrightsreserved.1.IntroductionInthefiscalyear1994,theamountofLNGimportedtoJapanreachedabout43milliontons;ofthis31milliontonswereusedasfuelforpowergeneration.AsshowninFig.1,about20%oftheLNGimportedwasusedforpowergeneration[2].Fig.2showsthemajor
8、LNGpowergenerationsystemsnowinoperationandtheiroutputs.SeveralcommercialLNGpowergenerationplantshavebeenconstructedsince1979,andtheirtotaloutputhasreach
